[carboniteaddon]

1 The minimap button window is in minimize mode.
Shift left click the Carbonite (C) button to toggle it as described in the button tooltip.

2 The minimap button window and all other buttons are off the screen. The (C) button is always forced to be on screen.
Right click the (C) button, select Options, select Reset page, left click the "Reset window layouts of current character" text or left click the "Import settings from a character" and select a character name who has the button window on the screen to get their window layouts.